Question

Assertion (A): In protandrous flowers like sunflowers, the stamens mature before the carpels
Reason (R): When stamens and carpels mature at different times, self pollination is not possible and cross pollination becomes inevitable

• A. Both A and R are true and R is the correct explanation of A
• B. A is true but R is false
• C. Both A and R are true and R is not the correct explanation of A
• D. Both A and R are false

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A

In protandrous bisexual flowers like sunflowers, male reproductive organs mature before the female reproductive organs. This is done to prevent self-pollination. The plant can only undergo cross-pollination.

Cross-pollination is advantageous because it allows for diversity in the species, as the genetic information of different plants are combined. It helps to prevent inbreeding depression which happens due to continued self-pollination.